Home / 13,308.90-19,975.72-6,739.74

Finding the Fourth Proportional to 13,308.90, 19,975.72 and 6,739.74

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Solution

The fourth proportional to 13,308.90, 19,975.72 and 6,739.74 is: 10,115.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,308.90 : 19,975.72 = 6,739.74 : x
  2. Step 2: Convert to fraction form
    13,308.90/19,975.72 = 6,739.74/x
  3. Step 3: Cross multiply
    13,308.90x = 19,975.72 × 6,739.74
  4. Step 4: Simplify right side
    13,308.90x = 134,631,159.11
  5. Step 5: Solve for x
    x = 134,631,159.11/13,308.90
  6. Step 6: Final answer
    x = 10,115.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.